X-Git-Url: http://xvm.mit.edu/gitweb/invirt/packages/invirt-web.git/blobdiff_plain/b6054ddecbc4d4a9b8e822ff8f0ace386e5e6e00..4663602deda7a8c90d59c8d3a57cd5a3945d73ca:/templates/main.py diff --git a/templates/main.py b/templates/main.py deleted file mode 100755 index 6ec853d..0000000 --- a/templates/main.py +++ /dev/null @@ -1,1144 +0,0 @@ -#!/usr/bin/python -"""Main CGI script for web interface""" - -import base64 -import cPickle -import cgi -import datetime -import getafsgroups -import hmac -import os -import random -import re -import sha -import simplejson -import string -import subprocess -import sys -import time -from StringIO import StringIO - - -def revertStandardError(): - """Move stderr to stdout, and return the contents of the old stderr.""" - errio = sys.stderr - if not isinstance(errio, StringIO): - return None - sys.stderr = sys.stdout - errio.seek(0) - return errio.read() - -def printError(): - """Revert stderr to stdout, and print the contents of stderr""" - if isinstance(sys.stderr, StringIO): - print revertStandardError() - -if __name__ == '__main__': - import atexit - atexit.register(printError) - sys.stderr = StringIO() - -sys.path.append('/home/ecprice/.local/lib/python2.5/site-packages') - -from Cheetah.Template import Template -from sipb_xen_database import * - -class MyException(Exception): - """Base class for my exceptions""" - pass - -class InvalidInput(MyException): - """Exception for user-provided input is invalid but maybe in good faith. - - This would include setting memory to negative (which might be a - typo) but not setting an invalid boot CD (which requires bypassing - the select box). - """ - def __init__(self, err_field, err_value, expl=None): - MyException.__init__(self, expl) - self.err_field = err_field - self.err_value = err_value - -class CodeError(MyException): - """Exception for internal errors or bad faith input.""" - pass - -def helppopup(subj): - """Return HTML code for a (?) link to a specified help topic""" - return ('(?)') - -class Global(object): - """Global state of the system, to avoid duplicate remctls to get state""" - def __init__(self, user): - self.user = user - - def __get_uptimes(self): - if not hasattr(self, '_uptimes'): - self._uptimes = getUptimes(Machine.select()) - return self._uptimes - uptimes = property(__get_uptimes) - - def clear(self): - """Clear the state so future accesses reload it.""" - for attr in ('_uptimes', ): - if hasattr(self, attr): - delattr(self, attr) - -g = None - -class User: - """User class (sort of useless, I admit)""" - def __init__(self, username, email): - self.username = username - self.email = email - -def makeErrorPre(old, addition): - if addition is None: - return - if old: - return old[:-6] + '\n----\n' + str(addition) + '' - else: - return '

STDERR:

' + str(addition) + '
' - -Template.helppopup = staticmethod(helppopup) -Template.err = None - -class JsonDict: - """Class to store a dictionary that will be converted to JSON""" - def __init__(self, **kws): - self.data = kws - if 'err' in kws: - err = kws['err'] - del kws['err'] - self.addError(err) - - def __str__(self): - return simplejson.dumps(self.data) - - def addError(self, text): - """Add stderr text to be displayed on the website.""" - self.data['err'] = \ - makeErrorPre(self.data.get('err'), text) - -class Defaults: - """Class to store default values for fields.""" - memory = 256 - disk = 4.0 - cdrom = '' - name = '' - vmtype = 'hvm' - def __init__(self, max_memory=None, max_disk=None, **kws): - if max_memory is not None: - self.memory = min(self.memory, max_memory) - if max_disk is not None: - self.max_disk = min(self.disk, max_disk) - for key in kws: - setattr(self, key, kws[key]) - - - -default_headers = {'Content-Type': 'text/html'} - -# ... and stolen from xend/uuid.py -def randomUUID(): - """Generate a random UUID.""" - - return [ random.randint(0, 255) for _ in range(0, 16) ] - -def uuidToString(u): - """Turn a numeric UUID to a hyphen-seperated one.""" - return "-".join(["%02x" * 4, "%02x" * 2, "%02x" * 2, "%02x" * 2, - "%02x" * 6]) % tuple(u) - -MAX_MEMORY_TOTAL = 512 -MAX_MEMORY_SINGLE = 256 -MIN_MEMORY_SINGLE = 16 -MAX_DISK_TOTAL = 50 -MAX_DISK_SINGLE = 50 -MIN_DISK_SINGLE = 0.1 -MAX_VMS_TOTAL = 10 -MAX_VMS_ACTIVE = 4 - -def getMachinesByOwner(user, machine=None): - """Return the machines owned by the same as a machine. - - If the machine is None, return the machines owned by the same - user. - """ - if machine: - owner = machine.owner - else: - owner = user.username - return Machine.select_by(owner=owner) - -def maxMemory(user, machine=None, on=True): - """Return the maximum memory for a machine or a user. - - If machine is None, return the memory available for a new - machine. Else, return the maximum that machine can have. - - on is whether the machine should be turned on. If false, the max - memory for the machine to change to, if it is left off, is - returned. - """ - if not on: - return MAX_MEMORY_SINGLE - machines = getMachinesByOwner(user, machine) - active_machines = [x for x in machines if g.uptimes[x]] - mem_usage = sum([x.memory for x in active_machines if x != machine]) - return min(MAX_MEMORY_SINGLE, MAX_MEMORY_TOTAL-mem_usage) - -def maxDisk(user, machine=None): - machines = getMachinesByOwner(user, machine) - disk_usage = sum([sum([y.size for y in x.disks]) - for x in machines if x != machine]) - return min(MAX_DISK_SINGLE, MAX_DISK_TOTAL-disk_usage/1024.) - -def cantAddVm(user): - machines = getMachinesByOwner(user) - active_machines = [x for x in machines if g.uptimes[x]] - if len(machines) >= MAX_VMS_TOTAL: - return 'You have too many VMs to create a new one.' - if len(active_machines) >= MAX_VMS_ACTIVE: - return ('You already have the maximum number of VMs turned on. ' - 'To create more, turn one off.') - return False - -def haveAccess(user, machine): - """Return whether a user has adminstrative access to a machine""" - if user.username == 'moo': - return True - if user.username in (machine.administrator, machine.owner): - return True - if getafsgroups.checkAfsGroup(user.username, machine.administrator, - 'athena.mit.edu'): #XXX Cell? - return True - if getafsgroups.checkLockerOwner(user.username, machine.owner): - return True - return owns(user, machine) - -def owns(user, machine): - """Return whether a user owns a machine""" - if user.username == 'moo': - return True - return getafsgroups.checkLockerOwner(user.username, machine.owner) - -def error(op, user, fields, err, emsg): - """Print an error page when a CodeError occurs""" - d = dict(op=op, user=user, errorMessage=str(err), - stderr=emsg) - return Template(file='error.tmpl', searchList=[d]); - -def invalidInput(op, user, fields, err, emsg): - """Print an error page when an InvalidInput exception occurs""" - d = dict(op=op, user=user, err_field=err.err_field, - err_value=str(err.err_value), stderr=emsg, - errorMessage=str(err)) - return Template(file='invalid.tmpl', searchList=[d]); - -def validMachineName(name): - """Check that name is valid for a machine name""" - if not name: - return False - charset = string.ascii_letters + string.digits + '-_' - if name[0] in '-_' or len(name) > 22: - return False - for x in name: - if x not in charset: - return False - return True - -def kinit(username = 'tabbott/extra', keytab = '/etc/tabbott.keytab'): - """Kinit with a given username and keytab""" - - p = subprocess.Popen(['kinit', "-k", "-t", keytab, username], - stderr=subprocess.PIPE) - e = p.wait() - if e: - raise CodeError("Error %s in kinit: %s" % (e, p.stderr.read())) - -def checkKinit(): - """If we lack tickets, kinit.""" - p = subprocess.Popen(['klist', '-s']) - if p.wait(): - kinit() - -def remctl(*args, **kws): - """Perform a remctl and return the output. - - kinits if necessary, and outputs errors to stderr. - """ - checkKinit() - p = subprocess.Popen(['remctl', 'black-mesa.mit.edu'] - + list(args), - stdout=subprocess.PIPE, - stderr=subprocess.PIPE) - v = p.wait() - if kws.get('err'): - return p.stdout.read(), p.stderr.read() - if v: - print >> sys.stderr, 'Error', v, 'on remctl', args, ':' - print >> sys.stderr, p.stderr.read() - raise CodeError('ERROR on remctl') - return p.stdout.read() - -def lvcreate(machine, disk): - """Create a single disk for a machine""" - remctl('web', 'lvcreate', machine.name, - disk.guest_device_name, str(disk.size)) - -def makeDisks(machine): - """Update the lvm partitions to add a disk.""" - for disk in machine.disks: - lvcreate(machine, disk) - -def bootMachine(machine, cdtype): - """Boot a machine with a given boot CD. - - If cdtype is None, give no boot cd. Otherwise, it is the string - id of the CD (e.g. 'gutsy_i386') - """ - if cdtype is not None: - remctl('control', machine.name, 'create', - cdtype) - else: - remctl('control', machine.name, 'create') - -def registerMachine(machine): - """Register a machine to be controlled by the web interface""" - remctl('web', 'register', machine.name) - -def unregisterMachine(machine): - """Unregister a machine to not be controlled by the web interface""" - remctl('web', 'unregister', machine.name) - -def parseStatus(s): - """Parse a status string into nested tuples of strings. - - s = output of xm list --long - """ - values = re.split('([()])', s) - stack = [[]] - for v in values[2:-2]: #remove initial and final '()' - if not v: - continue - v = v.strip() - if v == '(': - stack.append([]) - elif v == ')': - if len(stack[-1]) == 1: - stack[-1].append('') - stack[-2].append(stack[-1]) - stack.pop() - else: - if not v: - continue - stack[-1].extend(v.split()) - return stack[-1] - -def getUptimes(machines=None): - """Return a dictionary mapping machine names to uptime strings""" - value_string = remctl('web', 'listvms') - lines = value_string.splitlines() - d = {} - for line in lines: - lst = line.split() - name, id = lst[:2] - uptime = ' '.join(lst[2:]) - d[name] = uptime - ans = {} - for m in machines: - ans[m] = d.get(m.name) - return ans - -def statusInfo(machine): - """Return the status list for a given machine. - - Gets and parses xm list --long - """ - value_string, err_string = remctl('control', machine.name, 'list-long', - err=True) - if 'Unknown command' in err_string: - raise CodeError("ERROR in remctl list-long %s is not registered" % - (machine.name,)) - elif 'does not exist' in err_string: - return None - elif err_string: - raise CodeError("ERROR in remctl list-long %s: %s" % - (machine.name, err_string)) - status = parseStatus(value_string) - return status - -def hasVnc(status): - """Does the machine with a given status list support VNC?""" - if status is None: - return False - for l in status: - if l[0] == 'device' and l[1][0] == 'vfb': - d = dict(l[1][1:]) - return 'location' in d - return False - -def createVm(user, name, memory, disk, is_hvm, cdrom): - """Create a VM and put it in the database""" - # put stuff in the table - transaction = ctx.current.create_transaction() - try: - if memory > maxMemory(user): - raise InvalidInput('memory', memory, - "Max %s" % maxMemory(user)) - if disk > maxDisk(user) * 1024: - raise InvalidInput('disk', disk, - "Max %s" % maxDisk(user)) - reason = cantAddVm(user) - if reason: - raise InvalidInput('create', True, reason) - res = meta.engine.execute('select nextval(' - '\'"machines_machine_id_seq"\')') - id = res.fetchone()[0] - machine = Machine() - machine.machine_id = id - machine.name = name - machine.memory = memory - machine.owner = user.username - machine.administrator = user.username - machine.contact = user.email - machine.uuid = uuidToString(randomUUID()) - machine.boot_off_cd = True - machine_type = Type.get_by(hvm=is_hvm) - machine.type_id = machine_type.type_id - ctx.current.save(machine) - disk = Disk(machine.machine_id, - 'hda', disk) - open_nics = NIC.select_by(machine_id=None) - if not open_nics: #No IPs left! - raise CodeError("No IP addresses left! " - "Contact sipb-xen-dev@mit.edu") - nic = open_nics[0] - nic.machine_id = machine.machine_id - nic.hostname = name - ctx.current.save(nic) - ctx.current.save(disk) - transaction.commit() - except: - transaction.rollback() - raise - registerMachine(machine) - makeDisks(machine) - # tell it to boot with cdrom - bootMachine(machine, cdrom) - - return machine - -def validMemory(user, memory, machine=None, on=True): - """Parse and validate limits for memory for a given user and machine. - - on is whether the memory must be valid after the machine is - switched on. - """ - try: - memory = int(memory) - if memory < MIN_MEMORY_SINGLE: - raise ValueError - except ValueError: - raise InvalidInput('memory', memory, - "Minimum %s MB" % MIN_MEMORY_SINGLE) - if memory > maxMemory(user, machine, on): - raise InvalidInput('memory', memory, - 'Maximum %s MB' % maxMemory(user, machine)) - return memory - -def validDisk(user, disk, machine=None): - """Parse and validate limits for disk for a given user and machine.""" - try: - disk = float(disk) - if disk > maxDisk(user, machine): - raise InvalidInput('disk', disk, - "Maximum %s G" % maxDisk(user, machine)) - disk = int(disk * 1024) - if disk < MIN_DISK_SINGLE * 1024: - raise ValueError - except ValueError: - raise InvalidInput('disk', disk, - "Minimum %s GB" % MIN_DISK_SINGLE) - return disk - -def parseCreate(user, fields): - name = fields.getfirst('name') - if not validMachineName(name): - raise InvalidInput('name', name, 'You must provide a machine name.') - name = name.lower() - - if Machine.get_by(name=name): - raise InvalidInput('name', name, - "Name already exists.") - - memory = fields.getfirst('memory') - memory = validMemory(user, memory, on=True) - - disk = fields.getfirst('disk') - disk = validDisk(user, disk) - - vm_type = fields.getfirst('vmtype') - if vm_type not in ('hvm', 'paravm'): - raise CodeError("Invalid vm type '%s'" % vm_type) - is_hvm = (vm_type == 'hvm') - - cdrom = fields.getfirst('cdrom') - if cdrom is not None and not CDROM.get(cdrom): - raise CodeError("Invalid cdrom type '%s'" % cdrom) - return dict(user=user, name=name, memory=memory, disk=disk, - is_hvm=is_hvm, cdrom=cdrom) - -def create(user, fields): - """Handler for create requests.""" - js = fields.getfirst('js') - try: - parsed_fields = parseCreate(user, fields) - machine = createVm(**parsed_fields) - except InvalidInput, err: - if not js: - raise - else: - err = None - if not js: - d = dict(user=user, - machine=machine) - return Template(file='create.tmpl', searchList=[d]) - g.clear() #Changed global state - d = getListDict(user) - d['err'] = err - if err: - for field in fields.keys(): - setattr(d['defaults'], field, fields.getfirst(field)) - else: - d['new_machine'] = parsed_fields['name'] - t = Template(file='list.tmpl', searchList=[d]) - return JsonDict(createtable=t.createTable(), - machinelist=t.machineList(d['machines'])) - - -def getListDict(user): - machines = [m for m in Machine.select() if haveAccess(user, m)] - on = {} - has_vnc = {} - on = g.uptimes - for m in machines: - m.uptime = g.uptimes.get(m) - if not on[m]: - has_vnc[m] = 'Off' - elif m.type.hvm: - has_vnc[m] = True - else: - has_vnc[m] = "ParaVM"+helppopup("paravm_console") - # for m in machines: - # status = statusInfo(m) - # on[m.name] = status is not None - # has_vnc[m.name] = hasVnc(status) - max_memory = maxMemory(user) - max_disk = maxDisk(user) - defaults = Defaults(max_memory=max_memory, - max_disk=max_disk, - cdrom='gutsy-i386') - d = dict(user=user, - cant_add_vm=cantAddVm(user), - max_memory=max_memory, - max_disk=max_disk, - defaults=defaults, - machines=machines, - has_vnc=has_vnc, - uptimes=g.uptimes, - cdroms=CDROM.select()) - return d - -def listVms(user, fields): - """Handler for list requests.""" - d = getListDict(user) - t = Template(file='list.tmpl', searchList=[d]) - js = fields.getfirst('js') - if not js: - return t - if js == 'machinelist': - return t.machineList(d['machines']) - elif js.startswith('machinerow-'): - request_machine_id = int(js.split('-')[1]) - m = [x for x in d['machines'] if x.id == request_machine_id] - return t.machineRow(m) - elif js == 'createtable': - return t.createTable() - -def testMachineId(user, machineId, exists=True): - """Parse, validate and check authorization for a given machineId. - - If exists is False, don't check that it exists. - """ - if machineId is None: - raise CodeError("No machine ID specified") - try: - machineId = int(machineId) - except ValueError: - raise CodeError("Invalid machine ID '%s'" % machineId) - machine = Machine.get(machineId) - if exists and machine is None: - raise CodeError("No such machine ID '%s'" % machineId) - if machine is not None and not haveAccess(user, machine): - raise CodeError("No access to machine ID '%s'" % machineId) - return machine - -def vnc(user, fields): - """VNC applet page. - - Note that due to same-domain restrictions, the applet connects to - the webserver, which needs to forward those requests to the xen - server. The Xen server runs another proxy that (1) authenticates - and (2) finds the correct port for the VM. - - You might want iptables like: - - -t nat -A PREROUTING -s ! 18.181.0.60 -i eth1 -p tcp -m tcp \ - --dport 10003 -j DNAT --to-destination 18.181.0.60:10003 - -t nat -A POSTROUTING -d 18.181.0.60 -o eth1 -p tcp -m tcp \ - --dport 10003 -j SNAT --to-source 18.187.7.142 - -A FORWARD -d 18.181.0.60 -i eth1 -o eth1 -p tcp -m tcp \ - --dport 10003 -j ACCEPT - - Remember to enable iptables! - echo 1 > /proc/sys/net/ipv4/ip_forward - """ - machine = testMachineId(user, fields.getfirst('machine_id')) - - TOKEN_KEY = "0M6W0U1IXexThi5idy8mnkqPKEq1LtEnlK/pZSn0cDrN" - - data = {} - data["user"] = user.username - data["machine"] = machine.name - data["expires"] = time.time()+(5*60) - pickled_data = cPickle.dumps(data) - m = hmac.new(TOKEN_KEY, digestmod=sha) - m.update(pickled_data) - token = {'data': pickled_data, 'digest': m.digest()} - token = cPickle.dumps(token) - token = base64.urlsafe_b64encode(token) - - status = statusInfo(machine) - has_vnc = hasVnc(status) - - d = dict(user=user, - on=status, - has_vnc=has_vnc, - machine=machine, - hostname=os.environ.get('SERVER_NAME', 'localhost'), - authtoken=token) - return Template(file='vnc.tmpl', searchList=[d]) - -def getNicInfo(data_dict, machine): - """Helper function for info, get data on nics for a machine. - - Modifies data_dict to include the relevant data, and returns a list - of (key, name) pairs to display "name: data_dict[key]" to the user. - """ - data_dict['num_nics'] = len(machine.nics) - nic_fields_template = [('nic%s_hostname', 'NIC %s hostname'), - ('nic%s_mac', 'NIC %s MAC Addr'), - ('nic%s_ip', 'NIC %s IP'), - ] - nic_fields = [] - for i in range(len(machine.nics)): - nic_fields.extend([(x % i, y % i) for x, y in nic_fields_template]) - data_dict['nic%s_hostname' % i] = (machine.nics[i].hostname + - '.servers.csail.mit.edu') - data_dict['nic%s_mac' % i] = machine.nics[i].mac_addr - data_dict['nic%s_ip' % i] = machine.nics[i].ip - if len(machine.nics) == 1: - nic_fields = [(x, y.replace('NIC 0 ', '')) for x, y in nic_fields] - return nic_fields - -def getDiskInfo(data_dict, machine): - """Helper function for info, get data on disks for a machine. - - Modifies data_dict to include the relevant data, and returns a list - of (key, name) pairs to display "name: data_dict[key]" to the user. - """ - data_dict['num_disks'] = len(machine.disks) - disk_fields_template = [('%s_size', '%s size')] - disk_fields = [] - for disk in machine.disks: - name = disk.guest_device_name - disk_fields.extend([(x % name, y % name) for x, y in - disk_fields_template]) - data_dict['%s_size' % name] = "%0.1f GB" % (disk.size / 1024.) - return disk_fields - -def deleteVM(machine): - """Delete a VM.""" - remctl('control', machine.name, 'destroy', err=True) - transaction = ctx.current.create_transaction() - delete_disk_pairs = [(machine.name, d.guest_device_name) - for d in machine.disks] - try: - for nic in machine.nics: - nic.machine_id = None - nic.hostname = None - ctx.current.save(nic) - for disk in machine.disks: - ctx.current.delete(disk) - ctx.current.delete(machine) - transaction.commit() - except: - transaction.rollback() - raise - for mname, dname in delete_disk_pairs: - remctl('web', 'lvremove', mname, dname) - unregisterMachine(machine) - -def commandResult(user, fields): - print >> sys.stderr, time.time()-start_time - machine = testMachineId(user, fields.getfirst('machine_id')) - action = fields.getfirst('action') - cdrom = fields.getfirst('cdrom') - print >> sys.stderr, time.time()-start_time - if cdrom is not None and not CDROM.get(cdrom): - raise CodeError("Invalid cdrom type '%s'" % cdrom) - if action not in ('Reboot', 'Power on', 'Power off', 'Shutdown', - 'Delete VM'): - raise CodeError("Invalid action '%s'" % action) - if action == 'Reboot': - if cdrom is not None: - out, err = remctl('control', machine.name, 'reboot', cdrom, - err=True) - else: - out, err = remctl('control', machine.name, 'reboot', - err=True) - if err: - if re.match("Error: Domain '.*' does not exist.", err): - raise InvalidInput("action", "reboot", - "Machine is not on") - else: - print >> sys.stderr, 'Error on reboot:' - print >> sys.stderr, err - raise CodeError('ERROR on remctl') - - elif action == 'Power on': - if maxMemory(user) < machine.memory: - raise InvalidInput('action', 'Power on', - "You don't have enough free RAM quota " - "to turn on this machine.") - bootMachine(machine, cdrom) - elif action == 'Power off': - out, err = remctl('control', machine.name, 'destroy', err=True) - if err: - if re.match("Error: Domain '.*' does not exist.", err): - raise InvalidInput("action", "Power off", - "Machine is not on.") - else: - print >> sys.stderr, 'Error on power off:' - print >> sys.stderr, err - raise CodeError('ERROR on remctl') - elif action == 'Shutdown': - out, err = remctl('control', machine.name, 'shutdown', err=True) - if err: - if re.match("Error: Domain '.*' does not exist.", err): - raise InvalidInput("action", "Shutdown", - "Machine is not on.") - else: - print >> sys.stderr, 'Error on Shutdown:' - print >> sys.stderr, err - raise CodeError('ERROR on remctl') - elif action == 'Delete VM': - deleteVM(machine) - print >> sys.stderr, time.time()-start_time - - d = dict(user=user, - command=action, - machine=machine) - return d - -def command(user, fields): - """Handler for running commands like boot and delete on a VM.""" - js = fields.getfirst('js') - try: - d = commandResult(user, fields) - except InvalidInput, err: - if not js: - raise - result = None - else: - err = None - result = 'Success!' - if not js: - return Template(file='command.tmpl', searchList=[d]) - if js == 'list': - g.clear() #Changed global state - d = getListDict(user) - t = Template(file='list.tmpl', searchList=[d]) - return JsonDict(createtable=t.createTable(), - machinelist=t.machineList(d['machines']), - result=result, - err=err) - elif js == 'info': - machine = testMachineId(user, fields.getfirst('machine_id')) - d = infoDict(user, machine) - t = Template(file='info.tmpl', searchList=[d]) - return JsonDict(info=t.infoTable(), - commands=t.commands(), - modify=t.modifyForm(), - result=result, - err=err) - else: - raise InvalidInput('js', js, 'Not a known js type.') - -def testAdmin(user, admin, machine): - if admin in (None, machine.administrator): - return None - if admin == user.username: - return admin - if getafsgroups.checkAfsGroup(user.username, admin, 'athena.mit.edu'): - return admin - if getafsgroups.checkAfsGroup(user.username, 'system:'+admin, - 'athena.mit.edu'): - return 'system:'+admin - raise InvalidInput('administrator', admin, - 'You must control the group you move it to.') - -def testOwner(user, owner, machine): - if owner in (None, machine.owner): - return None - value = getafsgroups.checkLockerOwner(user.username, owner, verbose=True) - if value == True: - return owner - raise InvalidInput('owner', owner, value) - -def testContact(user, contact, machine=None): - if contact in (None, machine.contact): - return None - if not re.match("^[A-Z0-9._%+-]+@[A-Z0-9.-]+\.[A-Z]{2,4}$", contact, re.I): - raise InvalidInput('contact', contact, "Not a valid email.") - return contact - -def testDisk(user, disksize, machine=None): - return disksize - -def testName(user, name, machine=None): - if name in (None, machine.name): - return None - if not Machine.select_by(name=name): - return name - raise InvalidInput('name', name, "Name is already taken.") - -def testHostname(user, hostname, machine): - for nic in machine.nics: - if hostname == nic.hostname: - return hostname - # check if doesn't already exist - if NIC.select_by(hostname=hostname): - raise InvalidInput('hostname', hostname, - "Already exists") - if not re.match("^[A-Z0-9-]{1,22}$", hostname, re.I): - raise InvalidInput('hostname', hostname, "Not a valid hostname; " - "must only use number, letters, and dashes.") - return hostname - -def modifyDict(user, fields): - olddisk = {} - transaction = ctx.current.create_transaction() - try: - machine = testMachineId(user, fields.getfirst('machine_id')) - owner = testOwner(user, fields.getfirst('owner'), machine) - admin = testAdmin(user, fields.getfirst('administrator'), machine) - contact = testContact(user, fields.getfirst('contact'), machine) - hostname = testHostname(owner, fields.getfirst('hostname'), machine) - name = testName(user, fields.getfirst('name'), machine) - oldname = machine.name - command = "modify" - - memory = fields.getfirst('memory') - if memory is not None: - memory = validMemory(user, memory, machine, on=False) - machine.memory = memory - - disksize = testDisk(user, fields.getfirst('disk')) - if disksize is not None: - disksize = validDisk(user, disksize, machine) - disk = machine.disks[0] - if disk.size != disksize: - olddisk[disk.guest_device_name] = disksize - disk.size = disksize - ctx.current.save(disk) - - # XXX first NIC gets hostname on change? - # Interface doesn't support more. - for nic in machine.nics[:1]: - nic.hostname = hostname - ctx.current.save(nic) - - if owner is not None: - machine.owner = owner - if name is not None: - machine.name = name - if admin is not None: - machine.administrator = admin - if contact is not None: - machine.contact = contact - - ctx.current.save(machine) - transaction.commit() - except: - transaction.rollback() - raise - for diskname in olddisk: - remctl("web", "lvresize", oldname, diskname, str(olddisk[diskname])) - if name is not None: - for disk in machine.disks: - remctl("web", "lvrename", oldname, disk.guest_device_name, name) - remctl("web", "moveregister", oldname, name) - return dict(user=user, - command=command, - machine=machine) - -def modify(user, fields): - """Handler for modifying attributes of a machine.""" - js = fields.getfirst('js') - try: - modify_dict = modifyDict(user, fields) - except InvalidInput, err: - if not js: - raise - result = '' - machine = testMachineId(user, fields.getfirst('machine_id')) - else: - machine = modify_dict['machine'] - result='Success!' - err = None - if not js: - return Template(file='command.tmpl', searchList=[modify_dict]) - info_dict = infoDict(user, machine) - info_dict['err'] = err - if err: - for field in fields.keys(): - setattr(info_dict['defaults'], field, fields.getfirst(field)) - t = Template(file='info.tmpl', searchList=[info_dict]) - return JsonDict(info=t.infoTable(), - commands=t.commands(), - modify=t.modifyForm(), - result=result, - err=err) - - -def helpHandler(user, fields): - """Handler for help messages.""" - simple = fields.getfirst('simple') - subjects = fields.getlist('subject') - - help_mapping = dict(paravm_console=""" -ParaVM machines do not support console access over VNC. To access -these machines, you either need to boot with a liveCD and ssh in or -hope that the sipb-xen maintainers add support for serial consoles.""", - hvm_paravm=""" -HVM machines use the virtualization features of the processor, while -ParaVM machines use Xen's emulation of virtualization features. You -want an HVM virtualized machine.""", - cpu_weight=""" -Don't ask us! We're as mystified as you are.""", - owner=""" -The owner field is used to determine quotas. It must be the name of a -locker that you are an AFS administrator of. In particular, you or an -AFS group you are a member of must have AFS rlidwka bits on the -locker. You can check see who administers the LOCKER locker using the -command 'fs la /mit/LOCKER' on Athena.) See also administrator.""", - administrator=""" -The administrator field determines who can access the console and -power on and off the machine. This can be either a user or a moira -group.""", - quotas=""" -Quotas are determined on a per-locker basis. Each quota may have a -maximum of 512 megabytes of active ram, 50 gigabytes of disk, and 4 -active machines.""" - ) - - if not subjects: - subjects = sorted(help_mapping.keys()) - - d = dict(user=user, - simple=simple, - subjects=subjects, - mapping=help_mapping) - - return Template(file="help.tmpl", searchList=[d]) - - -def badOperation(u, e): - raise CodeError("Unknown operation") - -def infoDict(user, machine): - status = statusInfo(machine) - has_vnc = hasVnc(status) - if status is None: - main_status = dict(name=machine.name, - memory=str(machine.memory)) - uptime = None - cputime = None - else: - main_status = dict(status[1:]) - start_time = float(main_status.get('start_time', 0)) - uptime = datetime.timedelta(seconds=int(time.time()-start_time)) - cpu_time_float = float(main_status.get('cpu_time', 0)) - cputime = datetime.timedelta(seconds=int(cpu_time_float)) - display_fields = """name uptime memory state cpu_weight on_reboot - on_poweroff on_crash on_xend_start on_xend_stop bootloader""".split() - display_fields = [('name', 'Name'), - ('owner', 'Owner'), - ('administrator', 'Administrator'), - ('contact', 'Contact'), - ('type', 'Type'), - 'NIC_INFO', - ('uptime', 'uptime'), - ('cputime', 'CPU usage'), - ('memory', 'RAM'), - 'DISK_INFO', - ('state', 'state (xen format)'), - ('cpu_weight', 'CPU weight'+helppopup('cpu_weight')), - ('on_reboot', 'Action on VM reboot'), - ('on_poweroff', 'Action on VM poweroff'), - ('on_crash', 'Action on VM crash'), - ('on_xend_start', 'Action on Xen start'), - ('on_xend_stop', 'Action on Xen stop'), - ('bootloader', 'Bootloader options'), - ] - fields = [] - machine_info = {} - machine_info['name'] = machine.name - machine_info['type'] = machine.type.hvm and 'HVM' or 'ParaVM' - machine_info['owner'] = machine.owner - machine_info['administrator'] = machine.administrator - machine_info['contact'] = machine.contact - - nic_fields = getNicInfo(machine_info, machine) - nic_point = display_fields.index('NIC_INFO') - display_fields = (display_fields[:nic_point] + nic_fields + - display_fields[nic_point+1:]) - - disk_fields = getDiskInfo(machine_info, machine) - disk_point = display_fields.index('DISK_INFO') - display_fields = (display_fields[:disk_point] + disk_fields + - display_fields[disk_point+1:]) - - main_status['memory'] += ' MB' - for field, disp in display_fields: - if field in ('uptime', 'cputime') and locals()[field] is not None: - fields.append((disp, locals()[field])) - elif field in machine_info: - fields.append((disp, machine_info[field])) - elif field in main_status: - fields.append((disp, main_status[field])) - else: - pass - #fields.append((disp, None)) - max_mem = maxMemory(user, machine) - max_disk = maxDisk(user, machine) - defaults=Defaults() - for name in 'machine_id name administrator owner memory contact'.split(): - setattr(defaults, name, getattr(machine, name)) - if machine.nics: - defaults.hostname = machine.nics[0].hostname - defaults.disk = "%0.2f" % (machine.disks[0].size/1024.) - d = dict(user=user, - cdroms=CDROM.select(), - on=status is not None, - machine=machine, - defaults=defaults, - has_vnc=has_vnc, - uptime=str(uptime), - ram=machine.memory, - max_mem=max_mem, - max_disk=max_disk, - owner_help=helppopup("owner"), - fields = fields) - return d - -def info(user, fields): - """Handler for info on a single VM.""" - machine = testMachineId(user, fields.getfirst('machine_id')) - d = infoDict(user, machine) - return Template(file='info.tmpl', searchList=[d]) - -mapping = dict(list=listVms, - vnc=vnc, - command=command, - modify=modify, - info=info, - create=create, - help=helpHandler) - -def printHeaders(headers): - for key, value in headers.iteritems(): - print '%s: %s' % (key, value) - print - - -def getUser(): - """Return the current user based on the SSL environment variables""" - if 'SSL_CLIENT_S_DN_Email' in os.environ: - username = os.environ['SSL_CLIENT_S_DN_Email'].split("@")[0] - return User(username, os.environ['SSL_CLIENT_S_DN_Email']) - else: - return User('moo', 'nobody') - -if __name__ == '__main__': - start_time = time.time() - fields = cgi.FieldStorage() - u = getUser() - g = Global(u) - operation = os.environ.get('PATH_INFO', '') - if not operation: - print "Status: 301 Moved Permanently" - print 'Location: ' + os.environ['SCRIPT_NAME']+'/\n' - sys.exit(0) - - if operation.startswith('/'): - operation = operation[1:] - if not operation: - operation = 'list' - - - - fun = mapping.get(operation, badOperation) - - if fun not in (helpHandler, ): - connect('postgres://sipb-xen@sipb-xen-dev.mit.edu/sipb_xen') - try: - output = fun(u, fields) - - headers = dict(default_headers) - if isinstance(output, tuple): - new_headers, output = output - headers.update(new_headers) - - e = revertStandardError() - if e: - output.addError(e) - printHeaders(headers) - print output - except Exception, err: - if not fields.has_key('js'): - if isinstance(err, CodeError): - print 'Content-Type: text/html\n' - e = revertStandardError() - print error(operation, u, fields, err, e) - sys.exit(1) - if isinstance(err, InvalidInput): - print 'Content-Type: text/html\n' - e = revertStandardError() - print invalidInput(operation, u, fields, err, e) - sys.exit(1) - print 'Content-Type: text/plain\n' - print 'Uh-oh! We experienced an error.' - print 'Please email sipb-xen@mit.edu with the contents of this page.' - print '----' - e = revertStandardError() - print e - print '----' - raise